Book of Donmon Teith

Excerpt from Screw Thread Kinks TO cut a left-hand thread, the handle I is lowered until gear F meshes with E. This makes L run in the reverse direction, as E,

Excerpt from Screw Machine Kinks WE once saw an automatic equipped for mak ing -inch nuts from the hexagon bar, drilling, tapping, chamfering both inside and ou

Excerpt from Screw Threads In the following pages are compiled a number of concise tables relating to standard screw thread systems and kindred subjects, carefu